The WhiteHawk 33BHBS is awesome!! We love it and try to plan a monthly excursion if we can!! The new 2016 floor plan hasn't changed too much. Added a few windows on the living room slide and removed the window above the outdoor kitchen.
The Tundra Crew Max pulls well. Your rig might be a little too tall. We have 20" rims on ours so we're not as tall as you are but have a hard time unhitching at times. However, gas mileage is horrible. Have to start looking for gas stations around the half tank mark since it guzzles quicker after that point. Last summer got down to 8 miles on the range indicator and I actually got a little worried.
If and when I can upgrade (only one source of income in our family) I will be looking for the upgrade to a 2500/3500. The Tundra does well enough, but, having a little heavier truck with this size of trailer would benefit the towing. Especially when a semi is passing you and it sucks you into it's lane....that's a white knuckles experience until you get used to it!!
Our Crew Max has the towing package. 10,500lbs. The TT hits 8,500lbs total. Not a lot of wiggle room there. Just take your time driving and plan ahead of you want to arrive anywhere early.
We average about 63mph on cruise control. Texas roads get really hot in the summer, so I don't push it over 65mph unless passing.
If you can get the gear ratio in check like what was already stated, this is the trailer for you!! The only reason we got this model was the bunk beds for my teenage boys.
I hope this helps and feel free to shoot me a message on here anytime if you have any questions. I had a lot of them myself.